Indirect Power Factor Correction Method and Corresponding Sensorless Switch-Mode Resonant AC/DC Converter

Nowadays, in the view of growing concern regarding harmonic distortion in distribution networks, power supplies with power factor correction are required. Circuit topology proposed in this paper can be implemented in AC/DC converters to reduce input current distortion. Having simple topology it is particularly useful in power supplies where output constant power is advantage (battery charging) and where frequent output short-circuits take place, e.g., in power supplies for electric arc